Evaporative air cooler



FIG. 1 is a front elevation view of an evaporative air cooler showing my new design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear elevation view thereof, showing a replaceable air filtrating paper plate fixed by two bars and watered by colder water;

FIG. 5 is a top plan view thereof;

FIG. 6 is a left front perspective view thereof; and,

FIG. 7 is a left rear perspective view thereof. 

CLAIM The ornamental design for an evaporative air cooler, as shown and described. 